D-ECS-DY-23 sample questions

Question 1

During the initial deployment of an ECS 3.8 cluster, an engineer discovers that only the nodes in the first rack are forming the cluster. Nodes in the second rack are powered on and have their OS installed, but they fail to be discovered by the initial nodes. All nodes are connected to the same switches. Which of the following is the MOST likely cause of this issue?

Accepted Answer

The switch ports for the second rack have not been configured with the correct VLAN tags for the private data network.

Answer

The NTP service is not synchronized between the two racks.

Answer

The ECS license file has not been applied yet.

Answer

The DNS server is unreachable from the nodes in the second rack.

Question 2

A financial services company is deploying a multi-site ECS federation for active/active data access and disaster recovery. They have a primary site in New York and a secondary site in London. A critical requirement is that objects written to a specific namespace must be immediately replicated and available in both sites before the write operation is acknowledged to the client. Which Adaptive Replication Management (ARM) policy setting must be configured for the replication group associated with this namespace?

Accepted Answer

Enable 'Replicate to All Sites' and set 'Writes to this Replication Group must be available to all sites' to true.

Answer

Enable 'Replicate to All Sites' and set 'XOR at Source' to true.

Answer

Set the replication group policy to 'Full Copy' mode.

Answer

Enable 'Replicate to All Sites' and set 'Action on Primary Site Failure' to 'Failover'.

Question 3

A deployment engineer is configuring network separation for an ECS appliance. The design requires isolating management, public data, and private/replication traffic onto separate physical networks for security and performance. Which settings must be configured during the initial ECS OS setup to achieve this? (Select THREE)

Accepted Answer

Assign a unique VLAN ID for the public network.

Accepted Answer

Assign a unique VLAN ID for the private network.

Accepted Answer

Define the public network IP addresses as fixed or floating.

Answer

Configure a firewall rule to block traffic between networks.

Answer

Enable Data at Rest Encryption (D@RE).

Answer

Create a new storage pool for each network.

Question 4

True or False: When Data at Rest Encryption (D@RE) is enabled on an ECS system, the encryption keys are managed by an external Key Management Server (KMS) by default and this integration is mandatory for D@RE to function.

Accepted Answer

False

Answer

True

Question 5

A hospital is archiving medical imaging data from their Isilon cluster to a newly deployed ECS system using CloudPools. The hospital's compliance policy requires that all archived images be retained for a minimum of 7 years and be immutable. After configuring the CloudPools policy, the deployment engineer needs to ensure the immutability requirement is met on the ECS side. What must be configured on the target ECS bucket?

Accepted Answer

Enable a retention policy on the bucket with a 7-year retention period.

Answer

Enable bucket-level versioning.

Answer

Configure a bucket Access Control List (ACL) to deny delete operations.

Answer

Set a namespace-level hard quota to prevent new writes after 7 years.

Question 6

A consultant is using the ECS CLI to automate the creation of several new S3 users for an application team. The security policy requires that each user's access keys be immediately stored in a secure vault upon creation. Which ECS CLI command syntax should be used to create a new S3 user named 'app_user01' and output the credentials in a machine-readable format?

Accepted Answer

objcontrol user secret create app_user01

Answer

ecs-cli user create --name app_user01 --s3-user

Answer

ecs-cli iam create-s3-user --user-name app_user01

Answer

objcontrol user create s3 app_user01

Question 7

Which two data protection mechanisms does ECS use to ensure data durability and availability within a single VDC? (Select TWO)

Accepted Answer

Erasure Coding

Accepted Answer

Triple Mirroring

Answer

RAID-6

Answer

Snapshots

Answer

Deduplication

Question 8

A media company uses an S3-compatible application to upload large video files to an ECS cluster. The application is experiencing slow uploads and frequent timeouts. A performance analysis reveals that the application is attempting to upload multi-gigabyte files as a single PUT operation. To optimize this workflow, which S3 feature should the deployment engineer recommend the application developers implement?

Accepted Answer

S3 Multipart Upload

Answer

S3 Object Versioning

Answer

S3 Bucket Policies

Answer

S3 Cross-Region Replication

Question 9

Case Study: Global Research Inc.

Global Research Inc. (GRI) is a multinational scientific research organization with primary data centers in Frankfurt and Singapore. They are deploying a federated Dell ECS 3.8 environment to store and share large genomic datasets between their research teams. The Frankfurt site will be the primary VDC, and Singapore will be a replication target.

**Current Situation & Requirements:**
1. **Data Sovereignty:** Data originating in Frankfurt must remain protected within the Frankfurt VDC at all times, even if the link to Singapore is down. This data should eventually be replicated to Singapore for collaboration.
2. **Storage Efficiency:** Due to the massive scale of the data, storage efficiency is paramount. The solution must minimize storage overhead.
3. **Performance:** Researchers in Frankfurt need low-latency access to their data. Replication to Singapore should not impact local write performance.
4. **Access Control:** A specific group of 'auditors' needs read-only access to all datasets in a specific bucket ('genomic_data_archive') across both sites, but they must not be able to write or delete data.

Which combination of ECS configurations will meet all of GRI's requirements?

Accepted Answer

Use Erasure Coding (12+4) for the storage pool in Frankfurt. Configure ARM for asynchronous replication to Singapore. Create a bucket ACL granting the 'auditors' group read-only permission.

Answer

Use Triple Mirroring for the storage pool in Frankfurt. Configure ARM for synchronous replication to Singapore. Create a bucket ACL for the auditors with read/write permissions.

Answer

Use Erasure Coding (12+4) for the storage pool in Frankfurt. Configure ARM with 'Writes to this Replication Group must be available to all sites' enabled. Create a user-level permission for each auditor.

Answer

Use Triple Mirroring for the storage pool. Configure a one-way replication policy from Singapore to Frankfurt. Use a namespace quota to limit auditor access.

Question 10

A deployment engineer has just completed the rack-and-stack and cabling for a new 4-node ECS EX500 appliance. What is the very first software installation step that must be performed on the nodes?

Accepted Answer

Install the ECS Core OS from the provided ISO image.

Answer

Install the ECS software package.

Answer

Configure the Virtual Data Center (VDC).

Answer

Create the first storage pool.

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Free D-ECS-DY-23 sample questions

True or False: When Data at Rest Encryption (D@RE) is enabled on an ECS system, the encryption keys are managed by an external Key Management Server (KMS) by default and this integration is mandatory for D@RE to function.

Which two data protection mechanisms does ECS use to ensure data durability and availability within a single VDC? (Select TWO)

A deployment engineer has just completed the rack-and-stack and cabling for a new 4-node ECS EX500 appliance. What is the very first software installation step that must be performed on the nodes?

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